Diploperla robusta Stark & Gaufin.

This species is known from Illinois east to Connecticut and south to Alabama (Stark & Gaufin 1974; DeWalt et al. 2010). It was recently reported from Illinois (DeWalt et al. 2005) and was listed by that state as “endangered” due to it inhabiting only a single springbrook system in east-central Illinois (Illinois Endangered Species Protection Board 2009). This location appears to be its westernmost extent. Grubbs (2004) listed it from several counties in southern and central Indiana.

We present several additional locations for Indiana. IN, Crawford Co., Tributary Little Blue River, 1 mi N English at IN-37, [38.3502, -86.46758], 4/25/1976, A.V. Provonsha, M. Minno, 2N (PERC); Tributary Otter Creek, Yellow Birch Ravine Nature Preserve, 5 km W English off CR-139. 38.3271, -86.5488, 3/23/2006, R.E. DeWalt, S.A. Grubbs, N (INHS); Franklin Co, Pipe Creek at St Marie, 28 km SW Brookville, 39.3522, - 85.1095, 3/12/2007, R.E. DeWalt, 3N (INHS); Lawrence Co., Leatherwood Creek, 5.5 km NE Bedford, 38.8992, -86.4133, 2/23/2006, R.E. DeWalt, 2N (INHS); Martin Co., small stream 7 mi SE Shoals at US-150, [38.60151, -86.68809], 4/24/1976, A.V. Provonsha, M. Minno, N (PERC); Monroe Co. Tributary Clear Creek, Cedar Bluff Nature Preserve, 39.0364, -86.5636, 3/24/2006, R.E. DeWalt, S.A. Grubbs, N (INHS); Morgan Co., Stream at jct. IN-39 and 142, 5 mi S Monrovia, [39.50719, -86.45596], 4/11/1975, A.V. Provonsha, L. Dersch, N (PERC); Owen Co., Tributary Litten Branch, McCormick's Creek State Park, Wolf Cave Nature Preserve, 39.3018, -86.7211, 4/14/2006, R.E. DeWalt, 2N (INHS); Perry Co., Tributary Deer Creek, at IN- 66, 8 mi N of bridge on Deer Creek (indeterminate location), 5/17/1973, W.P. McCafferty, K. Black, A.V. Provonsha, 4N (PERC).